4MA0 Foundation June 2017 Paper 1R Q12
12 \(ABE\) is an isosceles triangle and \(BCDE\) is a square.
Diagram NOT accurately drawn
Angle \(BAE = 72^\circ\)
Work out the size of angle \(ABC\).
(3)
| Scheme | Marks |
|---|---|
| (Angle \(ABE\) = )\(180^\circ - 2 \times 72^\circ\) (=\(36^\circ\)) | M1 |
| Angle \(ABC = 180^\circ - 2 \times 72^\circ + 90^\circ\) | M1 |
| 126 | A1 |
| (3) | |
| (3 marks) |